package com.ly.controller;

import com.ly.pojo.Result;
import com.ly.pojo.User;
import com.ly.service.UserService;
import com.ly.utils.JwtUtil;
import com.ly.utils.Md5Util;
import com.ly.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
//参数验证
@Validated
public class UserController {
    //注入
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @PostMapping("/register")
    public Result register(@Pattern(regexp="^\\S{5,16}$") String username,@Pattern(regexp="^\\S{5,16}$") String password){
        //查询用户是否存在
        User u= userService.findByUserName(username);
        if(u==null){
            //没有占用 注册
            userService.register(username,password);
            return Result.succces("所有文数据");
        }else{
            return  Result.error("用户名已被占用");
        }
    }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp="^\\S{5,16}$") String username, @Pattern(regexp="^\\S{5,16}$")  String password) throws IOException {
        //根据用户名查询User
        User loginUser = userService.findByUserName(username);
        //判断是否查询到
        if (loginUser == null) {
            return Result.error("用户名错误");
        }
        //判断密码是否正确 loginUser对象中的password是密文的
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())) {
            //登录成功 创建一个MAP集合把用户和密码放进去
            Map<String,Object> claims=new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            //把token存储到redis中
            ValueOperations<String, String> operations = redisTemplate.opsForValue();
            operations.set(token,token,120, TimeUnit.HOURS);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo(@RequestHeader(name = "Authorization") String token){
        //根据用户名查询用户
//        Map<String, Object> map = JwtUtil.parseToken(token);
//        String username = (String) map.get("username");
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String)map.get("username");
        User user = userService.findByUserName(username);
        return Result.success(user);

    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.succces("更新成功");
    }
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String  avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.succces("更新头像成功");
    }
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params, @RequestHeader("Authorization") String token){
        //1,校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        if(!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }
        //原密码是否正确
        //调用userService查询用户拿到原密码，再和old_pwd比对
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User Loginuser = userService.findByUserName(username);
        if (!Loginuser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确");
        }
        //newPwd和rePwd是否一样
        if (!rePwd.equals(newPwd)){
            return Result.error("两次密码输入不一致");
        }
        //2，调用service完成密码更新
        userService.updatePwd(newPwd);
        //删除redis中对应的token
        ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
        operations.getOperations().delete(token);
        return Result.succces("密码更新成功");

    }

}
